The NRA said the ad will run Wednesday through June 25 in a number of state media markets.

The 60-second spot mentions the 2008 murder of Arkansas Democratic Party Chairman Bill Gwatney and says nothing in the legislation Pryor voted against would have prevented the killing.

A gun control group co-founded by New York Mayor Michael Bloomberg, Mayors Against Illegal Guns, ran a 30-second ad in May that attacked Pryor for his vote. The ad didn’t mention Gwatney by name but the group referred to him in a news release. Pryor called the ad “disgusting” and said it politicized a friend’s death.